I took my car for repairs and had a loaner. I went shopping. When I came out of the mall, I got in the car started it and went home. I found bags from a store that did not belong to me. On closer inspection I realized that the car was not the loaner I had been given.I hurred back to the mall and the loaner was a few spaces from where I got the car I was driving. I hurred to the right car and went home. The key had unlocked the door and cranked the car. Who knows!!